我是 python 新手,我正在制作一个处理 request.GET 方法的系统......当我将日期传递给系统时,如果它存在,那么它将查找数据库并根据该日期和其他显示数据日期,否则它将显示与其他日期的日期......这是我的代码:
from django.utils.xmlutils import SimplerXMLGenerator
from piston.handler import BaseHandler
from booking.models import *
from django.db.models import *
from piston.utils import rc, require_mime, require_extended, validate
import datetime
class BookingHandler(BaseHandler):
allowed_method = ('GET', 'POST', 'PUT', 'DELETE')
fields = ('id', 'date_select', 'product_name', 'quantity', 'price','totalcost', 'first_name', 'last_name', 'contact', 'product')
model = Booking
#for product availability
def read(self, request, id, date_select):
if not self.has_model():
return rc.NOT_IMPLEMENTED
try:
prod = Product.objects.get(id=id)
merge = []
checkDateExist = Booking.objects.filter(date_select=date_select)
if checkDateExist.exists():
entered_date = Booking.objects.values('date_select').distinct('date_select').filter(date_select=date_select)[0]['date_select']
else:
enteredTemp_date = datetime.datetime.strptime(date_select, '%Y-%m-%d')
entered_date = datetime.datetime.strftime(enteredTemp_date,'%Y-%m-%d')
delta = datetime.timedelta(days=3)
target_date = entered_date - delta
day = 1
for x in range(0,5):
delta = datetime.timedelta(days=x+day)
new_date = target_date + delta
maximumProdQuantity = prod.quantity
quantityReserve = Booking.objects.filter(date_select=new_date, product=prod).aggregate(Sum('quantity'))['quantity__sum']
if quantityReserve == None:
quantityReserve = 0
data1 = {'maximum_guest': maximumProdQuantity, 'avialable': quantityReserve, 'date': new_date}
merge.append(data1)
return merge
except self.model.DoesNotExist:
return rc.NOT_HERE
我得到了这个错误:
Piston/0.3dev (Django 1.3.1) crash report:
Method signature does not match.
Signature should be: id, date_select
Exception was: unsupported operand type(s) for -: 'str' and 'datetime.timedelta'
我认为在我的else
声明中entered_date
变成了一个字符串,我这样做entered_date = datetime.datetime.strftime(enteredTemp_date,'%Y-%m-%d')
是为了让日期格式不是2011-12-01 00:00:00
我只需要2011-12-01
的。我的问题是我怎样才能得到2011-12-01
日期时间格式而不是字符串?任何人都可以就我的情况给出提示或想法吗?谢谢